In subzero weather driving the Polaris to clean the snow off of the driveway or going shopping these are great even without socks they keep my feet toasty warm. I only wish I could have found them for my husband when he was doing chores and digging us out of the snow on our farm all those many long years. If your wondering how long they last after two hours cleaning the driveway I came in and removed them from my snow boots and stuck them in my slippers and they kept my feet warm until I went to bed about 8 to 10 hours after I opened them. I cant see living up here without them ever again.
I have used these foot warmers many times, so this is a repeat purchase for me. My feet used to get so cold that they hurt when I was out in cold weather or snow. Insulated boots and wool socks did nothing for my frozen toes. These foot warmers are little lifesavers. They stay warm about 5 hours, so if you're going to be out longer than that, take an extra pair. The only downside, I guess, is that they're disposable, but if I have to choose between going green and having frostbite, it's no contest. I've tried the battery operated socks, but I haven't found any that are comfortable and/or durable. (Don't get the disposable toe warmers; they're worthless.)
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